Internal-combustion engine.



W. YARLOTT.

INTERNAL COMBUSTION EN LHNE.

APPLICATION FIL'ED NOV. 7.1913.

Patented May 2, 1916.

2 SHEETSSHEET I.

E. W. YARLOTT.

INTERNAL COMBUSTION ENGINE.

APPLICATION FILED NOV-7. 1913.

Patented May 2, 1916.

2 SHEETSSHEET 2.

EARL W YARLOTT, OF MONTPELIEB, OI-ITO.

INTERNAL-COMBUSTION ENGINE.

I Patented May 2, 1216.

Application filed November .7, 1913. Serial No. 799,727.

1,131,558. Specification of Letters Patent.

did

To all whom it may concern Be it known that I, EARL Montpelier, in the county of Williams, State W. YAnLorr'r, a citizen of the United States, residing at Referring now to the drawings in which like characters of reference designate similar parts, 10 designatesa four cylinder four cycle gas engine, the inner cylinders being.

of Ohio, have invented certain new and. spaced apart to provide a space for the so useful Improvements in Internal-Combusreception of a shaft 11 which is provided tion Engines; and I do hereby declare the at its upper end with a valve 12 that will following to be a full, clear,- and exact debe presently more fully described. The scription of the invention, such as will enlower end of the shaft 11 is journaled in able others skilled in the art to which it bushings 13 and 14 preferably of brass arappertains to make and use the same. ranged in bored openings in a solid section This invention relates to internal combus- 14 of the crank case as shown in Fig. 2 tion engines and has for an object to proand adjacent to said lower end the shaft 11 vide an improved valve mechanism in which has fast thereon a worm wheel, 15 which a single revoluble valve operates to connect meshes with and is driven by a worm gear the firing ends of two or more cylinders 16 fast on a countershaft 17 driven from in the proper sequence with the fuel supthe crank shaft 4 by means of gears 18 and ply and with the exhaust. 19 fast respectively on the crank shaft 4 A further object is to provide a valve and the countershaft 17. These gears are mechanism in which the valve will be diso proportioned relatively to each other and rectly exposed to atmospheric pressure so the worms 15 and 16, that the rotary valve as to be air cooled as well as water cooled, shaft 11 is driven at one-half the speed of the valve being constructed and'arranged the crank shaft 4. this being necessary to to admit of an unobstructed free exhaust of 'produce an engine of the four-cycle prinso the burnt gases directly from the valve ciple. The shaft 11 is also made in two itself into the atmosphere, thus eliminating sections which are connected together by a back pressure. universal joint 20 the object of which is to A further object is to provide a novel PIQXBDt any cramping or binding of, the and extremely simple and compact disvalve 12 in its seat in the cage. e5 tributer head including a single valve cage The valve cage 21 is formed as an inand separate assages leading therefrom to tegral portion of an extremely simple and respectivecyhnders, the valve rotating in compact distributer head best shown in said valve cage and effecting the proper dis- Figs. 2 and 3. By referring to Fig. 2 it will tribution of the fresh gases and proper takbe seen that the valve cage is bored and a0 ing up of the burnt gases at the proper e-' tapered as shown at 22 to snugly receive riods from the cylinders silently and wlth the valve-12, the cage being also rabbeted precision. i as shown at 23 to form an annular shoulder With the above objects in view the inagainst which the inner and smaller end of vention consists of certain novel details of the valve is seated. By now referring to as construction and combination of parts here- Fig. 3 it ,will be seen that there is a series inaftcr fully described and claimed, it of passages 25, 26, 27 and 28 which lead being understood that-various modifications off from-corresponding ports 29, 30, 31 and may be made in the minordetails of con- 32 formed in the circular wall of the cage struction within the scope of the appended 21, these passages communicating with reclaim. spective cylinders 8. f

In the accompanying drawings illustrat- The passage 25 communicates with a port ing this invention: Figure 1 is a side ele- 33 in one cylinder, the passage 26-communivation of a four cylinder four cycle gas cates with a port 34 in another cylinder, the engine embodying my improvements. Fig. passage 27 communicates with a port 35 in .2 is a vertical section taken on the line another cylinder and the passage 28 com- 22 Fig. 1. Fig. 3 is a cross sectional view municates with a ort 36 in the remaining on the line 33 Fig. 1. Fig. 4 'is an o linder, there being as many passages as enlarged plan view of the valve detached. t ere are cylinders and ports, the object be- Fig. 5 is a cross sectional view on the line ing to lead the fresh gas successively to each 5---5 Fi 4. Fig.6 is a y cross sectional view on the Inc Flg. 4. I

of the cylinders and also exhaust the burnt gases successively therefrom. Furthermore,

the multiple distributor head is water j acketed as indicated at 37 to keep the valve cage, valve and passages cool durin the operation of the engine. There is an lntake pipe 38 with which any suitable carbureter or mixing valve may be. associated and through which the fresh gas is admitted to the valve and passages referred to and subsequently to the combustion chambers of the cylinders.

At the top the valve cage is left open as shown at 39 to enable the valve 12 to be easily placed therein and. removed therefromandalso to admit of the free and unobstructed exhaust of the gases through and from the valve The valve 12 is formed at one side with an L-shaped inlet port 40 the receiving. end 41 of which is located at the bottom of the valve while the discharge end 42 thereof opens out through one side of the valve thus adapting the gas to pass upwardly through the valve and out through.

the side thereof so as to find its-way into one of the passages above referred to as leading to the combustion chambers of the cylinders.

At another point the valve is provided with an L-shaped port 43 the receiving end 44 of which is adapted to register with either one of the ports 29 to 32 above referred to and the discharge end 45 of which opens through the ,top of the valve. Therefore, the exhaust gases received from the cylinders of the engine through the passages 25 to 28 pass through the L-shaped port 40 of I j the valve and exhaust directly, to the atmosphere upon leaving the valve, thus eliminating back pressure.

By reference to Fig.4 itwill be observed that the vertical portions of the L-shaped passages are elongated so as to extend approximately half way around the axis of the valve and it will also be noted by reference.

to Figs. 3 and 4 that the portions 42 and 44 of the L-shaped assages are elongated circumferentially of the valve in order to give the necessary period of time to provide for the intake and exhaust of the gases passing through the valve.

From the foregoing description taken in connection with the drawings it will be noted that the fresh, gas or mixture passes into, the cage and travels in an upward direction through the valve into the passagesleading to the cylinders while the exhaust gas enters the valve and passes upwardly and outwardly through the valve and directly therefrom into the atmosphere, said upward movement of the gas adding materially to the smoothness of operation and efiiciency of the motor and also assists in reducing back pressure to a minimum.

It will be noted especially that the valve has its top face exposed to the atmosphere so that the valve is air-cooled during its rotation while at the same timethe exhaust gases escape direct into the atmosphere so that heating of the valve will be reduced to a minimum and thus the smooth and effective operation of the engine will at all times be assured. By referring to Fig. 3 it will be noted that the entire distributer head is water cooled from the water jacket of the engine so that internal heating of the parts is reduced to a minimum.

What is claimed, is:

In an internal combustion engine, a cylinder casing having a valve seat formed in the upper. portion thereof connected at various points in its side wall to communicate with the different cylinders of the engine, the said casing beingconstructed to provide a charm her below and communicating with the lower portion of said valve seat, a valve mounted for rotation in said seat, the upper and lower faces of said valve communicating with the atmosphere and chamber respecvtively, the said valve being provided with diametrically and inversely disposed L- shaped passages, theends of one of which communicate with the side wall and upper face respectively of said valve, and the ends of the other of said passages communicating with the sidewall and bottom face respectively of said valve, a shaft connected at one end to said. valve and being geared at its opposite end to the crank shaft of said engine, and means for admitting gas to said chamber.

In testimony whereof, I afiix my signaturein the presence of two witnesses.

EARL W. YARLOTT.

Witnesses:

J. ,V. MAIER, ALVIN STANTZ. 

